iSeries EXTRA is a monthly e-mail newsletter that features articles relating to AS/400 and iSeries Application Development. Susan and Jon write a monthly column focussed on leveraging existing RPG development skills. To subscribe to the newsletter, Click here.
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The following are direct links to the articles we published up to and including December of 2002.
To see the articles published in 2003 Click here. To see the articles published in 2004 Click here.
| Look Before You %Lookup | ||
| V5R1's new %Lookup built-in function offers better performance and
greater flexibility than it's venerable predecessor, but there are
some points to watch out for. We'll fill you in on the details. |
Read the article | |
| Good-bye, Indicators! - How to kick the *IN habit | ||
| Over the last few releases of RPG IV the compiler writers have been
steadily adding features to allow us to abandon our dependency on
the dreaded *IN indicators. If the death of indicators comes as a
surprise to you, check out this article. |
Read the article | |
| RPG MONITOR is a Flexible Facility | ||
| Another wonderful feature of the V5R1 release is the new MONITOR
support. Based on Java's try/catch it provides powerful new error
handling options that should change the way you program! |
Read the article | |
| Some Pointers on Using Pointers in RPG IV | ||
| There's no need to be afraid of pointers if you use them the right
way. This piece shows you how. |
Read the article | |
| Free Ride - A look at V5R1's free-form calc support | ||
| The V5R1 release of RPG IV contained so many new features that we
couldn't begin to do them justice in a single article. This one focusses
on the new free-form support and shows you how to take advantage of
it. |
Read the article | |
| How About a Date (Field)? | ||
| The highlight here is on one of the most underutilized features
of RPG IV - Date fields. For those who didn't get around
to using them in their Y2K projects, this piece provides a brief introduction
and points out the one Date Opcode you should all be using! |
Read the article | |
| The case for Code/400 | ||
| There are better ways to develop RPG applications than using source
entry utility (SEU), screen design aid (SDA) and report layout utility
(RLU). This article suggest using Code/400 instead. |
Read the article | |
| Using Recursion | ||
| This articles discusses the use of Recursion as a programming technique
and looks at the RPG IV implementation. |
Read the article | |
| Are You Trigger Happy? | ||
| V5R1 introduced changes in the database that will cause errors in
many* Trigger programs. This article explains why, and tells you how
to fix the problem. (* "many" means 15 out of every
16 programs that use a fixed buffer layout!!) |
Read the article | |
| RPG IV Prototypes | ||
| Prototyping is one of the most underutilized aspects of RPG IV.
This article introduces prototyping and discusses why you should take
advantage of it. |
Read the article | |
| Conditional Compilation Directives | ||
| Another underutilized feature. This one is worth using if
for no other reason than to simplify the handling of additional testing
logic. |
Read the article | |
| Returning Multiple Values From a Subprocedure | ||
| Subprocedures can only return a single value. So how do you deal
with the a situation that requires you return an entire record? Or
indeed an entire set of records? This article introduces some
of the basic techniques that can be applied. |
Read the article | |
| The Versatility of Variable-Length Fields | ||
| As far as Jon is concerned these are the greatest thing since sliced
bread! Find out why he is so enthusiastic about them. |
Read the article | |
| To 'B' or not to 'B' | ||
| This article was a direct response to reader feedback following
the "Are You Trigger Happy" article. It discusses the use
of the integer data type to avoid the "old" B type binary's
limitations |
Read the article | |
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